TWI677446B - Structure and apparatus for tire pressure monitoring - Google Patents

Abstract

A tire pressure detection structure and a tire pressure detection device according to the present invention include a casing, a gas nozzle unit movably connected to the outside of the casing, and a tire pressure detection structure. The tire pressure detection structure is accommodated in the casing. In a housing space of the casing, the tire pressure detection structure includes a body, a signal processing unit, a detection unit connected to the signal processing unit, and a power supply unit for supplying power. The body has a first part and a A second part, the first part is disposed on an upper side of the second part and both are located on the same horizontal plane, the signal processing unit and the detection unit are respectively disposed on one side of the first part and the upper side of the second part, The power unit is disposed below the second portion.

Description

Tire pressure detection structure and tire pressure detection device

The invention relates to a tire pressure detection structure and a tire pressure detection device, and more particularly, to a tire pressure detection structure and a tire pressure detection device that can avoid interference of wireless signals sent and save space.

According to statistics, more than 70% of the causes of traffic accidents on highways are caused by flat tires, but less than 10% of drivers usually have the habit of actively checking the condition of vehicle tires, as can be seen from the above. The abnormality of vehicle tires has always been the most difficult problem for all drivers to prevent. Therefore, the industry has developed a tire pressure detection device to detect tire conditions in a normal state and immediately alert the driver when the tire conditions of the vehicle are abnormal. Avoid accidental casualties.

The conventional tire pressure detection device is mounted on a wheel frame of a vehicle tire. The tire pressure detection device includes a casing, a circuit board, a tire pressure sensor, a transmitting antenna, a processor, and a The bottom side of the casing is attached to the bottom inside the wheel frame. The circuit board (such as a PCB) is housed on the bottom side in the casing. The transmitting antenna and the processor and the The tire pressure sensor is soldered together on one side of the same large circuit board. The processor is electrically connected to the transmitting antenna and the tire pressure sensor, and the transmitting antenna and the tire pressure sensor are in place. On the same horizontal plane as the side opposite to the circuit board, the battery is placed on the bottom side in the casing and adjacent to the circuit board, and the battery and the circuit board are located on the same horizontal plane as the bottom side of the casing.

Although the conventional tire pressure detection device is conventionally installed on the wheel frame of the tire of the vehicle to achieve the effect of the tire pressure detection side, another problem is extended. The circuit board of the conventional tire pressure detection device is The transmitting antenna and the tire pressure sensor have directivity. Because the transmitting antenna and the tire pressure sensor are on the same horizontal plane on the circuit board, the tire pressure sensor has a certain directivity on the installation and the transmitting antenna also has directivity. So that Limited by the directivity of the tire pressure sensor, the problem that the relative angle between the transmitting antenna and the wheel frame cannot be changed, resulting in unstable reception and poor reception. In addition, because the circuit board and the battery are arranged on the same horizontal plane, the housing needs to add extra space to install the battery, which causes the problem of battery occupation space. Although another industry operator will improve the problem of battery occupation space, The battery is overlapped on the back of the circuit board to save space. However, this method will cause the battery to interfere with the transmitting antenna on the front of the circuit board, causing interference to the wireless signal sent by the transmitting antenna, which will cause the quality of the wireless signal sent Poor and unstable reception.

Furthermore, since it is conventional to use a large-area circuit board with the aforementioned transmitting antenna, processor, tire pressure sensor, and battery on the same side, the components (including the transmitting antenna, processor, and tire pressure sensor) The weight of each component is different, and the center of gravity of each component is located in a different area on the same side of the circuit board, which makes the positioning weight of each component on the circuit board uneven, which causes the weight of the tire pressure detection device to vary. The balance may easily cause the problem of abnormal sound due to uneven weight when the tire pressure detection device is mounted on a wheel frame of a vehicle tire.

An object of the present invention is to provide a tire pressure detection structure and a tire pressure detection device that can avoid interference of transmitted wireless signals and save space.

Another object of the present invention is to provide a first circuit board separated from a second circuit board and arranged vertically, and the power unit and the second circuit board on the second part are overlapped, so as to effectively achieve The tire pressure detection structure and tire pressure detection device with stable effect.

Another object of the present invention is to provide a tire pressure detection structure and a tire pressure detection device that can achieve the effect of weight balance and also effectively achieve the effect of avoiding abnormal noise.

To achieve the above object, the present invention provides a tire pressure detection side structure, which includes a body, a signal processing unit, a detection unit, and a power unit. The body has a first part and a second part. An upper side of the second part, and the first part and the second part are not on the same horizontal plane The signal processing unit is disposed on one side of the first part of the body. The signal processing unit is provided with a wireless transmitter, a processor connected to the wireless transmitter, and a first circuit board. The wireless transmitter and the The processor is disposed on one side of the first circuit board, the detection unit is disposed on the upper side of the second part of the body, the detection unit is provided with at least one sensor and a second circuit board, and the at least A sensor is disposed on one side of the second circuit board and is connected to the processor corresponding to the first circuit board. The power unit is disposed on the lower side of the second part, and opposite to the detection unit, the The power unit is connected to the signal processing unit and the detection unit to provide power. The design of the structure of the present invention makes it possible to effectively avoid interference of the transmitted wireless signals and save space.

The present invention further provides a tire pressure detection device, which includes a casing, an air nozzle unit, and a tire pressure detection side structure. The casing is provided with an accommodation space and a coupling portion, and the coupling portion is disposed on a casing of the casing. On the outside, one end of the nozzle unit is movably connected to the joint portion, and a tire pressure detection structure is disposed in the accommodation space. The tire pressure detection structure includes a body, a signal processing unit, a detection unit and A power unit having a first portion and a second portion. The first portion is disposed on an upper side of the second portion, and the first portion and the second portion are not on the same level. The signal processing unit is disposed on the On one side of the first part of the body, the signal processing unit is provided with a wireless transmitter, a processor connected to the wireless transmitter and a first circuit board, and the wireless transmitter and the processor are disposed on the first circuit. On one side of the board, the detection unit is disposed on the upper side of the second part of the body. The detection unit is provided with at least one sensor and a second circuit board, and the at least one sensor is disposed on the second On one side of the circuit board, and The power unit corresponding to the processor of the first circuit board is disposed on the lower side of the second part, and opposite to the detection unit, the power unit is connected to the signal processing unit and the detection unit to provide power; Through the design of the tire pressure detection device of the present invention, it is effectively achieved to avoid interference of the transmitted wireless signals and save space.

1‧‧‧ Tire pressure detection structure

11‧‧‧ Ontology

111‧‧‧ Part I

112‧‧‧ Part Two

13‧‧‧Signal Processing Unit

131‧‧‧Wireless transmitter

1311‧‧‧Multi-band antenna

132‧‧‧Processor

133‧‧‧The first circuit board

14‧‧‧ Detection Unit

141‧‧‧Sensor

142‧‧‧Second circuit board

15‧‧‧Power unit

16‧‧‧ First Colloid

17‧‧‧Second Sealing Colloid

2‧‧‧Tire pressure detection device

21‧‧‧shell

211‧‧‧ Upper cover

212‧‧‧base

213‧‧‧accommodation space

214‧‧‧Combination

2141‧‧‧ lug

2142‧‧‧perforation

23‧‧‧Gas nozzle unit

231‧‧‧Connection Department

2311‧‧‧Opening

232‧‧‧ Gas mouth

3‧‧‧ Pivot Post

4‧‧‧ round frame

41‧‧‧hole

FIG. 1A is a schematic three-dimensional assembly diagram of a tire pressure detection side structure according to an embodiment of the present invention.

FIG. 1B is a schematic three-dimensional partial cross-sectional view of a tire pressure detection side structure according to an embodiment of the present invention.

FIG. 2 is a block diagram of a tire pressure detection side structure according to an embodiment of the present invention.

FIG. 3 is a three-dimensional schematic diagram of a tire pressure detection device according to an embodiment of the present invention.

FIG. 3A is a three-dimensional exploded view of a tire pressure detection device according to an embodiment of the present invention.

FIG. 3B is another perspective view of the tire pressure detection device according to an embodiment of the present invention.

FIG. 4A is a schematic diagram of an implementation aspect of an embodiment of the present invention.

FIG. 4B is a partially enlarged schematic diagram of FIG. 4A of the present invention.

The above-mentioned object of the present invention and its structural and functional characteristics will be described based on the preferred embodiments of the drawings.

The present invention relates to a tire pressure detection structure and a tire pressure detection device. Referring to FIG. 1A, it is a three-dimensional schematic diagram of a tire pressure detection side structure according to an embodiment of the present invention; FIG. 1B is a tire according to an embodiment of the present invention. Schematic diagram of a three-dimensional partial cross-section of a pressure detection side structure; FIG. 2 is a block diagram of a tire pressure detection side structure according to an embodiment of the present invention; and FIG. 3 is a three-dimensional schematic diagram of a tire pressure detection device according to an embodiment of the present invention. Figure 3A is a three-dimensional exploded schematic view of a tire pressure detection device according to an embodiment of the present invention; Figure 3B is a schematic three-dimensional exploded schematic view of a tire pressure detection device according to an embodiment of the present invention; Figure 4A FIG. 4B is a schematic diagram of an embodiment of an embodiment of the present invention; FIG. 4B is a partially enlarged schematic diagram of FIG. 4A of the present invention. The tire pressure detection device 2 is mounted on a wheel frame 4 of a vehicle tire (not shown), and is used to detect the current tire pressure value (or tire pressure value and temperature value) in the tire of the vehicle. The tire pressure detection device 2 includes a casing 21, a nozzle unit 23, and a tire pressure detection structure 1. The casing 21 is provided with an accommodation space 213, a joint portion 214, an upper cover 211, and a base 212. The upper cover 211 covers the base 212, and the upper cover 211 and the base 212 together define the accommodating space 213. The joint portion 214 is provided on an outer side of the casing 21. The joint portion 214 has two opposite convexities. The ear 2141 is formed on the outer side of the upper cover 211 of the housing 21. The ear 2141 has a perforation 2142. One end of the gas nozzle unit 23 is movably connected to the coupling portion 214. In this embodiment, The joint portion 214 of the gas nozzle unit 23 and the housing 21 is pivotally connected. The gas nozzle unit 23 has a connection portion 231 and a gas nozzle port 232 located between the two opposite lugs 2141. The gas nozzle The port 232 is provided in the other end of the air nozzle unit 23 for filling gas to enter the vehicle tire. The connecting portion 231 is convex outward from one end of the air nozzle unit 23. The connecting portion 231 is provided with a pair of The opening 2311 of the perforation 2142 is penetrated through a pivot rod 3 corresponding to the perforation 2142 and the opening 2311, so that the valve unit 23 and the housing 21 can be adjusted relative to each other. For example, the housing 21 passes through the pivot The rod 3 is adjusted to move upward by 20 degrees on one end of the nozzle unit 23, or one end of the valve unit 23 is adjusted to move downward by 30 degrees on the housing 21 through the pivot rod 3, thereby effectively adjusting the wheel The specifications of box 4 are used for adaptive angle adjustment.

The tire pressure detection structure 1 is accommodated in the accommodation space 213 of the casing 21. The tire pressure detection structure 1 includes a main body 11, a signal processing unit 13, a detection unit 14 and a relative detection. Power unit 15 of unit 14, the body 11 has a first portion 111 and a second portion 112, the first portion 111 is disposed on an upper side of the second portion 112, and the first portion 111 and the second portion 112 are not on the same side On the horizontal plane, and in this embodiment, it is shown that the first portion 111 is vertically disposed at the upper center of the second portion 112, and the first portion 111 is vertically located at the center of gravity of the second portion 112 of the body 11. In an alternative embodiment, the first portion 111 may be designed to be formed by the upper side (or lower side or side) of the second portion 112 extending obliquely outward.

In addition, the signal processing unit 13 is disposed on a side of the first portion 111 of the main body 11. The signal processing unit 13 is provided with a wireless transmitter 131, a processor 132 connected to the wireless transmitter 131, and a first circuit board. 133. The wireless transmitter 131 and the processor 132 are disposed on one side of the first circuit board 133. The wireless transmitter 131 is used to send a specific multi-frequency wireless signal (such as a radio frequency wireless signal), and the wireless transmitter 131 is provided with a directional multi-band antenna 1311. The multi-band antenna 1311 is formed on one side surface of the first circuit board 133, and is electrically connected to the corresponding processor 132. The frequency of the frequency antenna 1311 is selected from two specific frequencies of 315MHZ (Hertz) and 433MHZ (Hertz), but is not limited to this. In specific implementation, the frequency of the multi-frequency antenna 1311 can also be selected, for example, 488MHZ (Hertz) ) To 868MHZ (Hertz) or other specific frequencies. The processor 132 receives a sensing signal from the detecting unit 14. A sensor signal transmitted by the transmitter 141 (such as a pressure sensor) to process and generate a tire signal (such as tire pressure, tire temperature, or tire speed), so that the processor 132 passes through the multi-frequency antenna 1311 of the wireless transmitter 131 The tire signal is transmitted to a central host display in the vehicle (not shown). The processor 132 includes a storage memory 1321 (such as a random access memory (RAM), a flash memory (Flash RAM), a read-only memory (ROM), or other device capable of storing data) for storing data. In one embodiment, the aforementioned storage memory 1321 can be modified as an independent component disposed on one side of the first circuit board 133 and located outside the processor 132 so that the storage memory 1321 is connected to the processor 132.

The detection unit 14 is disposed on the upper side of the second portion 112 of the main body 11. The detection unit 14 is provided with the at least one sensor 141 and a second circuit board 142. The sensor 141 is disposed on the first portion. Two circuit boards 142 are on one side, and the sensor 141 is a pressure sensor, a temperature sensor, or a pressure and temperature sensor, and the sensor 141 is represented as a pressure in this embodiment. A sensor, the pressure sensor is used to sense the tire pressure value (or tire pressure) of a vehicle tire, and the pressure sensor (ie, the sensor 141) is connected (such as connected by a signal line) corresponding to the first The processor 132 of the circuit board 133. In one embodiment, the detection unit 14 further includes a temperature sensor connected to the processor 132. The temperature sensor is used to sense a temperature value (or tire temperature) in a vehicle tire, and the temperature sensor The device is disposed on one side of the second circuit board 142, and the temperature sensor and the pressure sensor are respectively connected to the processor 132. The second circuit board 142 on the second part 112 is perpendicular to the first circuit board 133 corresponding to the first part 111, and the sensors 141 and the second circuit board 142 on the second part 112 are opposite to each other. The wireless transmitter 131 of the first circuit board 133 on the first portion 111 is not on the same horizontal plane. The first and second circuit boards 133 and 142 are, for example, a printed circuit board (PCB) or a flexible printed circuit board (FPCB).

Furthermore, the aforementioned power unit 15 is a battery. The power unit 15 is disposed on the lower side of the second portion 112 and is opposite to the detection unit 14 and the sensor 141 of the second portion 112 is located in the second portion. 112 is above the power unit 15, and the sensor 141 is disposed in parallel with the power unit 15, and the power unit 15 is connected to the signal processing unit 13 and the detection side unit 14 to provide power to the signal processing Unit 13 And detection unit 14. The wireless transmitter 131 of the first portion 111 is vertically above the power unit 15, so it is separated and vertically arranged by the first and second circuit boards 133 and 142, and the power unit 15 and the second portion 112 are The second circuit boards 142 are arranged in an overlapping manner, which not only can effectively save the occupied space, but also can prevent the wireless signals (such as tire signals) sent by the multi-frequency antenna 1311 from being interfered. In addition, the first portion 111 of the body 11 of the present invention is located at the center of the second portion 112 (that is, the first portion 111 is located at the center of gravity of the second portion 112 of the body 11), and the signal processing unit 13 and the detection unit 14 and the power unit 15 are evenly distributed on the corresponding first and second parts 111 and 112, so that the tire pressure detecting structure 1 of the tire pressure detecting device 2 of the present invention has the effect of weight balance, and further effectively avoids The tire pressure detection device 2 is mounted on a wheel frame 4 of a tire of a vehicle, and produces a strange sound effect when it is running.

Please refer to FIGS. 1B, 4A, and 4B. The tire pressure detection device 2 further includes a first sealant 16 and a second sealant 17. The first sealant 16 covers the first circuit board of the first portion 111. 133 and the multi-frequency antenna 1311 of the wireless transmitter 131, the processor 132 of the first circuit board 133 is exposed outside the first sealing body 16, and the second sealing body 17 covers the first portion of the second portion 112. Two circuit boards 142, and the sensor 141 of the second circuit board 142 is exposed outside the second sealing body 17, so the first and second circuit boards 133 and 142 of the body 11 are covered by the first and second sealing bodies 16. Covered by 17 to make the first circuit board 133 and the multi-frequency antenna 1311 and the second circuit board 142 on it difficult to be invaded and damaged by foreign objects (such as moisture, salt spray, or water vapor), thereby achieving protection effect. Furthermore, the service life of the tire pressure detection device 2 is effectively improved.

The air nozzle unit 23 is coupled to the corresponding wheel frame 4. The wheel frame 4 has a hole 41. The other end of the air nozzle unit 23 passes through the hole 41 of the wheel frame 4, and the casing 21 The sensor 141 located above the inside of the wheel frame 4 and parallel to the bottom of the second portion 112 of the body 11 corresponds to the bottom of the wheel frame 4.

When the tire pressure detecting device 2 is mounted on the wheel frame 4, since the multi-frequency antenna 1311 and the sensor 141 both have directivity, the multi-frequency antenna 1311 and the second antenna 111 passing through the first part 111 of the body 11 The sensor 141 of part 112 is not on the same horizontal plane, so that the sensing direction of the sensor 141 and the sending direction of the multi-frequency antenna 1311 are separated, and then the housing 21 passes through the pivot rod 3 to the air nozzle. Adjustment movement (such as adjustment Move up)), the relative angle between the multi-frequency antenna 1311 and the wheel frame 4 in the casing 21 is also relatively changed, and the multi-frequency antenna 1311 is further away from the wheel frame 4 to effectively avoid interference from the wheel frame 4, The sensor 141 on the second part 112 of the moved housing 21 after being adjusted is not affected and can still be maintained in the original sensing direction. Therefore, through the adjustment movement of the housing 21, the transmission direction of the multi-frequency antenna 1311 can be directed toward the It should be sent in the direction of the central host display in the vehicle, so as to achieve a good reception and stable reception.

Therefore, the tire pressure detection structure 1 and the casing 21 and the air nozzle unit 23 of the present invention constitute the design of the tire pressure detection device 2 described above, so that it can effectively save space and reach the wireless transmitter 131 away from the wheel frame 4 interference. It also effectively achieves the effect of maintaining stable reception between the wireless transmitter 131 and the central host display in the vehicle.

Claims (12)

A tire pressure detection structure includes: a body having a first portion and a second portion, the first portion being disposed on an upper side of the second portion, and the first portion and the second portion are not on the same horizontal plane; A signal processing unit is disposed on one side of the first part of the body. The signal processing unit is provided with a wireless transmitter, a processor connected to the wireless transmitter, and a first circuit board. The wireless transmitter and the processor A detection unit is disposed on one side of the first circuit board; a detection unit is disposed on the upper side of the second part of the body; the detection unit is provided with at least one sensor and a second circuit board, the at least one A sensor is disposed on one side of the second circuit board and is connected to the processor corresponding to the first circuit board; and a power unit is disposed on the lower side of the second part and is opposite to the detection side unit, The power unit is connected to the signal processing unit and the detection unit to provide power. According to the tire pressure detection structure described in item 1 of the scope of patent application, the tire pressure detection structure further includes a first sealant and a second sealant, and the first sealant covers the first circuit board and the wireless transmitter of the first part. Processor, the processor of the first circuit board is exposed outside the first sealing compound, the second sealing compound covers the second circuit board of the second part, and the at least one sense of the second circuit board The tester is exposed outside the second sealant. The tire pressure detection structure according to item 1 of the scope of patent application, wherein the first part is vertically disposed at the center of the upper side of the second part, and the first circuit board on the first part corresponds to the second part The second circuit board is vertical, and the wireless transmitter and the at least one sensor are not on the same horizontal plane. The tire pressure detection structure according to item 1 of the patent application scope, wherein the power unit is a battery, the at least one sensor of the second part is located above the power unit of the second part, and the at least A sensor is disposed in parallel with the power unit, and the wireless transmitter is vertically above the power unit. The tire pressure detection structure according to item 1 of the patent application scope, wherein the at least one sensor is a pressure sensor, a temperature sensor, or a pressure and temperature sensor. A tire pressure detection device includes: a casing provided with an accommodation space and a joint portion, the joint portion being provided on an outer side of the casing; a gas nozzle unit, one end of which is movably connected to the joint portion; and A tire pressure detection structure is disposed in the accommodation space. The tire pressure detection structure includes: a body having a first portion and a second portion, the first portion being disposed on an upper side of the second portion, and The first part and the second part are not on the same horizontal plane; a signal processing unit is disposed on one side of the first part of the body, and the signal processing unit is provided with a wireless transmitter and a processor connected to the wireless transmitter And a first circuit board, the wireless transmitter and the processor are disposed on one side of the first circuit board; a detection unit is disposed on the upper side of the second part of the body, and the detection unit is provided with at least A sensor and a second circuit board, the at least one sensor is disposed on one side of the second circuit board, and is connected to the processor corresponding to the first circuit board; and a power unit is disposed on the The lower side of the second part, and Measuring means, the power unit connected to the signal processing unit and the detecting unit, for providing power. The tire pressure detection device according to item 6 of the scope of patent application, wherein the casing is provided with an upper cover and a base, the upper cover covers the base, and the upper cover and the base jointly define the aforementioned accommodation space, and the combination Part has one or two opposite lugs, the lugs are formed on the outer side of the upper cover, and the lugs have a perforation, the air nozzle unit has a connection part between the two opposite lugs, and the connection part It is convexly formed from one end of the air nozzle unit, and the connection part is provided with a pair of openings that should be perforated, and the corresponding perforations and the openings are passed through a pivot rod. According to the tire pressure detection device described in item 6 of the patent application scope, the tire pressure detection device further includes a first sealant and a second sealant. The first sealant system covers the first circuit board and the wireless part of the first part. A transmitter, the processor of the first circuit board is exposed outside the first encapsulant, the second encapsulant covers the second circuit board of the second part, and the at least one of the second circuit board The sensor is exposed outside the second encapsulant. The tire pressure detection device according to item 6 of the patent application scope, wherein the first part is vertically disposed at the center of the upper side of the second part, and the first circuit board on the first part corresponds to the second part The second circuit board is vertical, and the wireless transmitter and the at least one sensor are not on the same horizontal plane. The tire pressure detection device according to item 6 of the patent application scope, wherein the power unit is a battery, the at least one sensor of the second part is located above the power unit of the second part, and the at least A sensor is disposed in parallel with the power unit, and the wireless transmitter is vertically above the power unit. The tire pressure detecting device according to item 6 of the application, wherein the at least one sensor is a pressure sensor, a temperature sensor, or a pressure and temperature sensor. The tire pressure detection device according to item 6 of the scope of patent application, wherein the valve unit is combined with a corresponding wheel frame, the wheel frame has a hole, and the other end of the valve unit passes through the wheel frame. And the body is located above the inside of the wheel frame, and the at least one sensor of the second part is parallel to the bottom corresponding to the inside of the wheel frame.